Support　castings　are　important　load-bearing　parts,which　require　higher　load-bearing　capacity.　A354　aluminumalloy　is　used　for　the　castings,　and　T6　heat　treatment　is　conducted　for　them.　In　this　paper,　the　casting　simulation　software　ofMAGMAsoft　was　used　to　simulate　the　filling　and　solidification　processes　of　the　squeeze　casting　support　parts.　According　to　the　temperature　drop　and　shrinkage　of　the　support　parts　during　thesqueeze　casting　process,　the　technical　parameters　for　making　high　strength　high　toughness　support　castings　were　obtained　tomeet　the　production　requirements.　Then　the　actual　production　verification　of　the　process　parameters　was　carried　out.　©　2018,　Chinese　Mechanical　Engineering　Society.　All　right　reserved.